Contents

use :node;

var Node = module.require('../Node').Node;

fn MemberExpression(left, right, computed)
  extends Node {

  this.type = 'MemberExpression';
  this.computed = computed;
  
  this.object = left;
  this.object.parent = this;
  
  this.property = right;
  this.property.parent = this;
}

MemberExpression.prototype.codegen = () -> {
  if !super.codegen() {
    return;
  }
  
  var objectType = this.object.type;
  this.object = this.object.codegen(); 
    
  if !this.property.codeGenerated {
    this.property = this.property.codegen(false);
  }
  
  // compile an expression such as: b?.c?.d.e
  // to: typeof b !== "undefined" && (b !== null && b.c !== null) ? b.c.d.e : null
  // instead of: (typeof b !== "undefined" && (b !== null && b.c !== null) ? b.c.d : null).e;
  if (this.object.type == 'ConditionalExpression' &&
      (objectType == 'NullPropagatingExpression' || objectType == 'MemberExpression' || 
       objectType == 'CallExpression' || objectType == 'NullCheckCallExpression')) {
    this.type = this.object.type;
    this.test = this.object.test;
    this.alternate = this.object.alternate;
    
    this.consequent = {
      type: 'MemberExpression',
      object: this.object.consequent,
      property: this.property,
      computed: this.computed
    };
  }
  
  return this;
};

MemberExpression.prototype.hasCallExpression = () -> {
  return this.object.__null_propagating ||
         this.object?.hasCallExpression?() ||
         this.property?.hasCallExpression();
};

exports.MemberExpression = MemberExpression;

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
spider-src-0.1.7	lib/spider-src/support/spider/src/ast/expressions/MemberExpression.spider
spider-src-0.1.6	lib/spider-src/support/spider/src/ast/expressions/MemberExpression.spider
spider-src-0.1.5	lib/spider-src/support/spider/src/ast/expressions/MemberExpression.spider